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WikiCards · Card list · Science cards · Loss function
Uncommon card · Science
Loss function, an Uncommon card
In mathematical optimization and decision theory, a loss function or cost function is a function that maps an event or values of one or more variables onto a real number intuitively representing some "cost" associated with the event.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 66
- DEF
- 43
- Power
- 109
- Wikipedia reads a year
- 68,000
Power 109 (ATK + DEF): stronger than 50 % of WikiCards cards.
Loss function quiz: 3 questions
Three questions on the Loss function card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
An ______ problem seeks to minimize a loss function.
Answer
optimization. An optimization problem seeks to minimize a loss function. From the Loss function article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Jean-Claude Killy. Jean-Claude Killy 69 · Loss function 66 · Triple point 63 · Skateboard 60 ATK in WikiCards.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- An optimization problem seeks to minimize a loss function.
- An objective function is either a loss function or its opposite, in which case it is to be maximized.
- The loss function could include terms from several levels of the hierarchy.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Loss function article was read about 68,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 66 and blocks with 43: each hit it takes is cut by 17 %.
How to get Loss function
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Loss function in the power ranking, all domains together.
- Jean-Claude KillyUncommon · History · ATK 69 DEF 40
- Phoebe PhiloUncommon · Arts · ATK 60 DEF 49
- SkateboardUncommon · Science · ATK 60 DEF 49
- Nicknames of New York CityUncommon · History · ATK 64 DEF 45
- Commutative propertyUncommon · Science · ATK 61 DEF 48
- GoyangUncommon · Society · ATK 63 DEF 46
Card lists
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Credits
Text : Wikipedia, Loss function (revision), CC BY-SA 4.0. Photo : M.Zkuba, CC BY-SA 4.0, Wikimedia Commons.
